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1. FUNCTIONS AND CONFIGURATION
1.2 Function block diagram
The function block diagram of this servo is shown below.
(1) MR-J2S-350A or less
Base
amplifier
CON1
DC
Encoder
Current
detection
NFB MC
L
1
L
2
L3
L
11
L
21
B2
U
V
W
B1
Regenerative option
MR-BAT
Pulse
input
(Note 1)
(Note 2)
Power
supply
CHARGE
lamp
Regene-
rative
TR
Current
detector
Dynamic
brake
Electro-
magnetic
brake
Servo motorServo amplifier
Optional battery
(for absolute position
detection system)
Overcurrent
protection
Voltage
detection
Virtual
encoder
Virtual
motor
Model
torque
Actual speed
control
Actual position
control
(Note 3)Cooling fan
Control
circuit
power
supply
Model position
control
Model
position
Model
speed
CN2
P
U
V
W
M
Model speed
control
Current
control
Analog monitor
(2 channels)
Diode
stack
Relay
I/F
A/D
RS-232C
RS-422 D/A
CN1A CN1B
CN3
Controller
RS-422/RS-232C
Analog
(2 channels)
D I/O control
Servo on
Start
Failure, etc.
Note:1. The built-in regenerative resistor is not provided for the MR-J2S-10A(1).
2. For 1-phase 230VAC, connect the power supply to L
1, L2 and leave L3 open.
L
3 is not provided for a 1-phase 100 to120VAC power supply. Refer to section 1.3 for the power supply specification.
3. Servo amplifiers MR-J2S-200A have a cooling fan.